Gradient

floyd算法的matlab程序 floyd-最短路问题 输入： B-邻接矩阵(bij)，指i到j之间的距离，可以是有向的。 sp- 起点标号。 ep- 终点标号。 输出： d- 最短路的距离。 path-最短路的路径。 (floyd algorithm matlab program floyd-shortest path problem Input: B-adjacency matrix (bij), refers to the distance between i to j, can be directed to. Sp-starting label. Ep-end labeling. Output: d-shortest distance. Path-shortest path.)

this a code about CDMA

KPCA 的基本思想是将数据从输入空间映射到高维特征空间,然后在特征空间利用线性主成分分析方法计算主成分。本程序是KPCA的源程序，可实现调用。对于初学者或许有帮助。(The basic idea of KPCA is to map the data from the input space to high dimensional feature space, then in the feature space using principal component analysis method to calculate the linear principal components. This program is the source KPCA can achieve call. May be helpful for beginners.)

这是一个matlab程序，用于计算混沌系统时间序列的盒维数(This is a matlab procedures used to calculate the time series of chaotic systems box dimension)

说明：  使用卷积法再现实验记录全息图，效果很好，欢迎下载(Convolution method for reproducing holograms)

codes for Interpolation and fitting lines

本文算法是将24 位真彩图的亮度分量分块 DCT ,然后利用DCT 量化系数的奇偶特性嵌入8 位灰度水印图,并通过PN 序列加密来保证水印的 安全性。算法中,将灰度图像转换为二进制数据 流,置乱后扩频调制,隐藏在宿主DCT 系数量化值 中,提取时不需要宿主信号,实现水印信号的盲提 取。(This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantization DCT coefficients and then use the parity properties of 8-bit grayscale watermark embedding map, and through the PN sequence of encryption to ensure the security of the watermark. Algorithm, the gray image into binary data stream, scrambling after the spread spectrum modulation, hidden in the host DCT coefficient quantization values, the extraction does not require the host signal, the blind watermark extraction.)

说明：  多步最小二乘法程序，适用与利用MATLAB进行系统辨识计算(Multi-step least squares procedure, applied to system identification using MATLAB calculation)

说明：  用canny算子对图像进行边缘检测，是matlab语言编辑的程序(Operators with a canny edge detection, is the matlab language editing of the program)

Signal Processing Toolbox for Use with MATLAB - User s Guide(Signal Processing Toolbox for Use with MATLAB- User s Guide)